Peculiarities of the potentiometric response of ISEs with membranes containing two neutral ionophores and an excess of ion-exchanger: Experiment and modeling

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Peculiarities of the potentiometric response of ISEs with membranes containing two neutral ionophores and an excess of ion-exchanger: Experiment and modeling. / Керестень, Валентина Максимовна ; Попов, Андрей Юрьевич ; Михельсон, Константин Николаевич.

в: Sensors and Actuators, B: Chemical, Том 417, 136090, 01.10.2024.

Результаты исследований: Научные публикации в периодических изданиях › статья › Рецензирование

BibTeX

@article{f831175d07924f758c03749f1a02ec67,

title = "Peculiarities of the potentiometric response of ISEs with membranes containing two neutral ionophores and an excess of ion-exchanger: Experiment and modeling",

abstract = "The potentiometric response of ion-selective electrodes (ISEs) with membranes simultaneously containing two ionophores: valinomycin and lithium ionophore Li VIII, as well as the cation exchanger potassium tetrakis(p-Cl-phenyl) borate in different concentrations is studied in KCl, LiCl and KCl + LiCl solutions. It is shown that ISEs with a membrane containing an excess of ionophores over the ion-exchanger provide Nernstian response to K+ and to Li+ ions. However, membranes with an excess of the ion-exchanger over valinomycin show Nernstian response to K+ only in mixed KCl + LiCl solutions with constant ratios of the concentrations of these electrolytes. On the contrary, the response to Li+ is obtained both in mixed and pure LiCl solutions. The results are semi-quantitatively explained using a simple mathematical model and respective computer simulation.",

keywords = "Computer simulations, Excess of ion-exchanger, Ion-selective electrodes, Potentiometric measurements, Two ionophores in membrane",

author = "Керестень, {Валентина Максимовна} and Попов, {Андрей Юрьевич} and Михельсон, {Константин Николаевич}",

year = "2024",

month = oct,

day = "1",

doi = "10.1016/j.snb.2024.136090",

language = "English",

volume = "417",

journal = "Sensors and Actuators, B: Chemical",

issn = "0925-4005",

publisher = "Elsevier",

}

RIS

TY - JOUR

T1 - Peculiarities of the potentiometric response of ISEs with membranes containing two neutral ionophores and an excess of ion-exchanger: Experiment and modeling

AU - Керестень, Валентина Максимовна

AU - Попов, Андрей Юрьевич

AU - Михельсон, Константин Николаевич

PY - 2024/10/1

Y1 - 2024/10/1

N2 - The potentiometric response of ion-selective electrodes (ISEs) with membranes simultaneously containing two ionophores: valinomycin and lithium ionophore Li VIII, as well as the cation exchanger potassium tetrakis(p-Cl-phenyl) borate in different concentrations is studied in KCl, LiCl and KCl + LiCl solutions. It is shown that ISEs with a membrane containing an excess of ionophores over the ion-exchanger provide Nernstian response to K+ and to Li+ ions. However, membranes with an excess of the ion-exchanger over valinomycin show Nernstian response to K+ only in mixed KCl + LiCl solutions with constant ratios of the concentrations of these electrolytes. On the contrary, the response to Li+ is obtained both in mixed and pure LiCl solutions. The results are semi-quantitatively explained using a simple mathematical model and respective computer simulation.

AB - The potentiometric response of ion-selective electrodes (ISEs) with membranes simultaneously containing two ionophores: valinomycin and lithium ionophore Li VIII, as well as the cation exchanger potassium tetrakis(p-Cl-phenyl) borate in different concentrations is studied in KCl, LiCl and KCl + LiCl solutions. It is shown that ISEs with a membrane containing an excess of ionophores over the ion-exchanger provide Nernstian response to K+ and to Li+ ions. However, membranes with an excess of the ion-exchanger over valinomycin show Nernstian response to K+ only in mixed KCl + LiCl solutions with constant ratios of the concentrations of these electrolytes. On the contrary, the response to Li+ is obtained both in mixed and pure LiCl solutions. The results are semi-quantitatively explained using a simple mathematical model and respective computer simulation.

KW - Computer simulations

KW - Excess of ion-exchanger

KW - Ion-selective electrodes

KW - Potentiometric measurements

KW - Two ionophores in membrane

UR - https://www.mendeley.com/catalogue/213da933-5fdf-3440-92ef-e22121a5de61/

U2 - 10.1016/j.snb.2024.136090

DO - 10.1016/j.snb.2024.136090

M3 - Article

VL - 417

JO - Sensors and Actuators, B: Chemical

JF - Sensors and Actuators, B: Chemical

SN - 0925-4005

M1 - 136090

ER -

ID: 120307695